A force of 20 N acts upon a 5 kg biock. Calculate the acceleration of the object.

The binding energy is 49K MeV.

To calculate the binding energy of an atom of 49K, we first need to find the mass defect. The mass defect is the difference between the sum of the masses of individual protons and neutrons and the actual mass of the nucleus (the given mass of 49K).

49K has 19 protons and 30 neutrons (49 - 19). We'll use the given masses to find the mass defect:

mass_protons = 19 * 1.007825 amu
mass_neutrons = 30 * 1.008665 amu
mass_nucleons = mass_protons + mass_neutrons

mass_defect = mass_nucleons - 48.965514 amu

Now, we'll convert the mass defect to MeV using the given conversion factor:

binding_energy = mass_defect * 931.5 MeV/amu

This will give you the binding energy in MeV per atom for 49K.

About -420.97 MeV is the binding energy per atom for the element 49K. It should be noted that the negative sign signifies that energy is released as the nucleus forms, indicating a stable nucleus.

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Answer:

A) Sue is lifting the bucket by a force of 49.035 newtons.

B) The bucket has an acceleration of 8.207 meters per square second on the Moon.

Explanation:

A) According to the First Newton's Law, a system is at equilibrium when it is either at rest or travelling at constant velocity. In this case, Sue must exert an external force on the bucket, whose magnitude is equal to the weight of the bucket but direction is opposed to it. By Second Newton's Law, we find that:

\(\Sigma F = F - m\cdot g = 0\) (1)

Where:

\(F\) - Lifting force, measured in newtons.

\(m\) - Mass of the bucket, measured in kilograms.

\(g\) - Gravitational acceleration, measured in meters per square second.

If we know that \(m = 5\,kg\) and \(g = 9.807\,\frac{m}{s^{2}}\), then the lifting force is:

\(F = m\cdot g\)

\(F = (5\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\)

\(F = 49.035\,N\)

Sue is lifting the bucket by a force of 49.035 newtons.

B) By the Second Newton's Law, we have the following model:

\(\Sigma F = F-m\cdot g = m\cdot a\) (2)

Where \(a\) is the net acceleration of the bucket, measured in meters per square second.

If we know that \(F = 49.035\,N\), \(m = 5\,kg\) and \(g = 1.6\,\frac{m}{s^{2}}\), then the net acceleration of the bucket is:

\(a = \frac{F}{m} -g\)

\(a = \frac{49.035\,N}{5\,kg}-1.6\,\frac{m}{s^{2}}\)

\(a = 8.207\,\frac{m}{s^{2}}\)

The bucket has an acceleration of 8.207 meters per square second on the Moon.

(a) The force applied by Sue in lifting the bucket at a constant velocity is 49 N.

(b) The acceleration of the bucket when lifted on the moon is 8.2 m/s².

The given parameters;

The force applied by Sue in lifting the bucket at a constant velocity is calculated as;

\(F = m(a + g)\)

\(F= mg\\\\F = 5 \times 9.8\\\\F = 49 \ N\)

The acceleration of the bucket when lifted on the moon with the calculated force is;

\(F = m(a + g)\\\\a+g = \frac{F}{m} \\\\a = \frac{F}{m} - g\\\\a = \frac{49}{5} - 1.6\\\\a = 8.2 \ m/s^2\)

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According to René Descartes, machines could not think because they lacked consciousness or a mind. Descartes proposed a dualistic philosophy, which distinguished between the physical body and the immaterial mind or soul. He believed that the mind, or "res cogitans," was responsible for conscious thought, reasoning, and intellect, while the body, or "res extensa," operated mechanically and lacked consciousness.

Descartes argued that thinking and consciousness were unique attributes of human beings and could not be replicated by machines or animals. He claimed that machines, no matter how complex or advanced, were fundamentally different from human beings because they lacked a conscious mind.

Descartes' view became influential in the philosophy of mind and has been subject to debate and criticism over the years. However, his ideas about the distinction between mind and body and the limitations of machines in thinking were significant contributions to the philosophical understanding of cognition and consciousness.

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Answer:

780 nm - 1000 µm.

Explanation:

i surched it up

The measured initial kinetic energy (J) of the bullet is 158.70 J.

So, the correct answer is A.

We know that the initial kinetic energy (KE) of the bullet is given by:

KE = (1/2) mv²

Where,m = mass of the bullet

v = velocity of the bullet

So, the initial kinetic energy of the bullet can be calculated as:

KE = (1/2) mv²

KE = (1/2) (m) (v)²

To determine the initial kinetic energy of the bullet in Joules, we can use the formula KE = 1/2mv², where m is the mass of the bullet and v is its velocity.

From question 13, we know that the mass of the bullet is 0.023 g, which is equal to 0.023/1000 kg. We also know that its velocity is 330 m/s.

Plugging these values into the formula, we get KE = 1/2 x 0.023/1000 x (330)²= 158.7 J.

Therefore, the measured initial kinetic energy of the bullet is option A, 158.70 J.

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When light enters a material of higher index of refraction, its speed decreases. Option D is correct.

This phenomenon is known as refraction and is a result of the change in the speed of light as it passes through a material with a different refractive index. The refractive index is a measure of how much a material can bend light, compared to the speed of light in a vacuum. When light passes from a medium with a lower refractive index, such as air or vacuum, to a medium with a higher refractive index, such as water or glass, it slows down and bends towards the normal line, an imaginary line perpendicular to the surface of the material.

The amount of refraction that occurs depends on the angle of incidence, or the angle at which the light strikes the surface, as well as the difference in refractive indices between the two materials. The change in speed and direction of the light as it passes through a material of higher refractive index can be described by Snell's law. Option D is correct.

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Answer:

gravity is changed by a factor of 10/16

Explanation:

gravitational force =  m1 m2 G / r^2    now change the m1  and  r

                               = 10 m1 m2 G/ (4 r)^2

                               = 10 /16  m1 m2 G / r^2

10 /16  the earth's gravity

Answer:

The answer for this solution is 4

Explanation:

MA=L/E

800/200

=4

The best way to study warm (1000 K) young stars forming behind an interstellar dust cloud would be to use infrared light. So option d is correct.

Interstellar dust clouds can block or scatter shorter-wavelength light, such as blue light and ultraviolet light, making it difficult to observe objects behind them. However, longer-wavelength infrared light can penetrate through the dust cloud with less scattering and absorption, allowing us to study the objects hidden behind the dust.

Infrared light is particularly effective for studying warm objects, as they emit most of their radiation in the infrared range. By using infrared telescopes and detectors, astronomers can observe the thermal radiation emitted by the young stars and study their formation and evolution processes.Therefore option d is correct.

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The correct option is A. acceleration.

For freely falling objects near Earth's surface, acceleration is constant. An object that is allowed to fall freely under the influence of Earth's gravity is known as a freely falling object. Gravity is an acceleration that acts on any two masses.

For freely falling objects near Earth's surface, the acceleration is indeed constant. This fundamental concept is a result of gravity's influence on objects in free fall. When an object is in free fall, it means that no forces other than gravity are acting upon it. In this scenario, the acceleration experienced by the object remains constant and is equal to the acceleration due to gravity, which is approximately 9.8 meters per second squared (m/s²) near Earth's surface.

The constancy of acceleration in free fall can be attributed to the consistent force of gravity acting on the object. Gravity pulls objects downward towards the center of the Earth, causing them to accelerate uniformly. Regardless of the object's mass, shape, or composition, the acceleration remains constant. This is known as the equivalence principle, which states that all objects experience the same acceleration due to gravity in the absence of other forces.

As an object falls freely, its velocity increases at a steady rate. Each second, the object's velocity increases by approximately 9.8 m/s. This means that in the first second, the velocity increases by 9.8 m/s, in the second second it increases by an additional 9.8 m/s, and so on. The consistent acceleration enables the object to cover greater distances in successive time intervals.

In conclusion, for freely falling objects near Earth's surface, the acceleration remains constant at approximately 9.8 m/s². This constancy arises from the unchanging force of gravity acting on the objects, leading to a uniform increase in velocity over time.

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Answer:

\(0.833\ \text{m/s}^2\)

Explanation:

m = Mass of block = 6 kg

F = Force on block = 5 N

\(\mu\) = Coefficient of friction = 0

a = Acceleration of the block

From Newton's second law we have

\(F=ma\\\Rightarrow a=\dfrac{F}{m}\\\Rightarrow a=\dfrac{5}{6}\\\Rightarrow a=0.833\ \text{m/s}^2\)

The acceleration of the block is \(0.833\ \text{m/s}^2\)

When a sound enters a new medium where the sound travels faster, it means the vibration of particles is high, and the wavelength of the waves increases which means the speed of the wave has increased. The frequency on the other hand will remain constant.

The frequency of the travelling wave is found to be 20 Hertz.

The relationship between the frequency of the wave, the wavelength of the wave and the speed of the wave is given by

V = fy

Where,

V is the speed of the travelling wave,

F is the frequency of the travelling wave,

y is the wavelength of the travelling wave.

The speed of the travelling wave is given to be 500m/s and the wavelength of the travelling wave is 25m.

Now, putting all the values,

500 = f(25)

f = 500/25

f = 20Hz

So, the frequency of the travelling wave is 20Hz.

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ANSWER

EXPLANATION

To find the centripetal acceleration, we have to apply the formula for centripetal acceleration:

where v = velocity of the vehicle

r = radius of the circular path

Therefore, the centripetal acceleration is:

That is the answer.

Answer:

Acceleration.

Explanation:

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

\(Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}\)

\(a = \frac{v - u}{t}\)

Where,

a is acceleration measured in \(ms^{-2}\)

v and u is final and initial velocity respectively, measured in \(ms^{-1}\)

t is time measured in seconds.

The S.I unit for measuring acceleration is meters per seconds square (m/s²).

Hence, 10 m/s^2 is an example of acceleration.

Answer:

If you're looking for an answer in m/s then 8.33.. ms^-1

Explanation:

To determine average speed then we simply need to divide the total distance travelled by the total time it took to travel that distance.

I.e. 250/30=8.33m/s

To convert this to km/h we simply need to multiply the answer in m/s by 3.6 which gives us approximately 30km/h

A 0.240-kg billiard ball that is moving at 3.00 m/s strikes the bumper of a pool table and bounces straight back at 2.40 m/s (80% of its original speed). the collision lasts 0.0150 s. a) Average force=-86.4N b) lost kinetic energy=0.389J c) percent of original energy= 64%

Average force on an object is measured by the ratio of change in momentum of the object to total time taken for the change of momentum

Let the object of mass m having initial velocity u before collision and final velocity v after it bounces back then-

a)To calculate the average force exerted on the ball by the bumper is-

Favg = m{(v-u)/t}

where v = negative because after collision it starts moving in opposite direction.

By putting the given value in the formula, we get-

Favg = 0.240 {(-2.40-3.00)/0.0150}

Favg = -86.4N

here, negative sign in the force indicate that the force applied to the ball is to change the ball's momentum, as the ball after striking start moving in the opposite direction.

b) kinetic energy lost during collision can be calculated as-

loss of energy= kinetic energy (initial) - kinetic energy (final)

KE lost= 1/2 mu² - 1/2 mv²

=1/2 m(u²-v²)

=1/2 * 0.240 (3²-2.40²)

KE lost =0.389Joule

c) percentage of original energy left is-

OE= 1-Fraction lost

OE= 1 - (KE lost)/(KE initial)

OE %= (1 - 0.389/1.08 ) *100

OE%= 64.0%

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Answer:

The frequency of light beam is 4.74 x 10^(14) s^(-1)

Explanation:

In this problem we use the formula C=F x ( lamda )

here c= the speed of light

f =the frequency of light beam

lamda = wavelength

c=3 x 10^8 m/s ( universally same)

lamda = 633nm = 633 * 10^(-9) m

Therefore f = c/ ( lamda )

or; f = 3 x 10^8 /  633 * 10^(-9)

f= 4.74 x 10^(14) s^(-1) .

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Answer:

The answer is 35.

Explanation:

We use the formula F=ma

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

The speed of the star is -2.71×10⁵ m/s. The negative sign indicates that the star is moving away from us.

The speed for a star in which this line appears at wavelength 120.5 nm is given by:

v = -2.71×10⁵ m/s

Here, we are given the wavelength λ = 120.5 nm. The wavelength of light emitted by an object is shifted by the Doppler effect. In this case, the star is moving away from us.

The observed wavelength λ' is related to the emitted wavelength λ by the formula:λ' = λ(1 + v/c),

We can rearrange this equation to solve for v:v = (λ' / λ - 1) × c

where v is the speed of the object, and c is the speed of light (c = 3.00×10⁸ m/s).

Substituting the given values, we get:

v = (120.5 nm / 121.6 nm - 1) × 3.00×10⁸ m/sv

= -2.71×10⁵ m/s

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answer:

Explanation:

the impulse-momentum theorem states that the change in momentum of an object equals the impulse applied to it. The impulse-momentum theorem is logically equivalent to Newton's second law of motion (the force law).

According to the impulse-momentum theorem, the amount of change in an object's momentum equal to the amount of force applied to the object over a certain amount of time. So, option B.

According to the impulse-momentum theorem, the impulse that is applied to an item is equal to the change in momentum.

It shows how an object's change in momentum depends on both the strength and duration of the applied forces.

Impulse is defined as the force acting for a short interval of time.

Impulse = F x t

The momentum of the object,

P = mv

So, the rate of change of momentum,

dP/dt = d(mv)/dt

dP/dt = mdv/t

dP/dt = ma = Force

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It's important to note that the time required for bed accumulation can vary greatly depending on the specific depositional setting and the geological context. Therefore, while thick beds generally suggest longer deposition periods, the exact relationship between bed thickness and time can be influenced by a range of geological factors.

The time required for the accumulation of sedimentary beds, whether thick or thin, can vary depending on various factors. Thick beds generally represent a longer period of sediment deposition compared to thin beds or laminations. This is because thick beds typically result from the continuous or episodic deposition of sediment over an extended period of time, whereas thin beds or laminations may form more rapidly or in a shorter time span.

The formation of thick beds can be influenced by factors such as sediment supply, depositional environment, and sedimentation rates. For example, in environments with high sediment input, such as river deltas or turbidite systems, thick beds may accumulate relatively quickly due to the large volume of sediment being transported and deposited.

On the other hand, thin beds or laminations often result from more rapid or intermittent sedimentation processes. These thinner layers can be associated with processes like periodic flooding events, storm deposition, or the settling of fine-grained sediments in calm environments.

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The potential energy of the person mass 95 Kg sitting on top of a slid 3 m high is 2795.85 J

The following data were obtained from the question:

The potential energy of the person can be obtained as follow:

PE = mgh

Inputting the given parameters, we have:

= 95 × 9.81 × 3

= 2795.85 J

Thus, the  potential energy of the person is 2795.85 J

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A mechanical wave is created when a source of energy causes a vibration. Vibration causes disturbance in system.

A mechanical wave is a wave that is caused by the oscillation of matter and so conveys energy through a medium.

When an energy source causes a vibration to propagate across a medium, it is called a mechanical wave.

A mechanical wave is a type of wave in which the medium's vibration is perpendicular to the wave's travel direction.

Hence, vibration is the correct answer.

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24  is  the average Speed of the car.

What is an average speed and an illustration?

Calculating average speed involves dividing the total distance traveled by the time interval. For instance, if it takes a person 40 minutes to travel 20 miles north, 20 miles south, and finally 20 miles in between, their average speed is 40 miles divided by 40 minutes, or 1 mile per minute (60 mph).

     a flag at 160m

  t = 8

  d = 160/8

       = 20

   d2 = 240/8

        = 30

   the average Speed = 2d1 d2/d1+d2

                                     = 2 * 20 * 30/50

                                        = 24

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Answer:

Yes they can stop or bat the puck with their open hand

Explanation:

Answer:

(3 ) friction hope this is correct